2129919 has 32 divisors (see below), whose sum is σ = 3379200. Its totient is φ = 1179360.

The previous prime is 2129903. The next prime is 2129951. The reversal of 2129919 is 9199212.

It is not a de Polignac number, because 2129919 - 2⁴ = 2129903 is a prime.

It is a super-2 number, since 2×2129919² = 9073109893122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 2129919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26922 + ... + 27000.

It is an arithmetic number, because the mean of its divisors is an integer number (105600).

2^2129919 is an apocalyptic number.

2129919 is a deficient number, since it is larger than the sum of its proper divisors (1249281).

2129919 is a wasteful number, since it uses less digits than its factorization.

2129919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155.

The product of its digits is 2916, while the sum is 33.

The square root of 2129919 is about 1459.4242015261. The cubic root of 2129919 is about 128.6632041390.

It can be divided in two parts, 2 and 129919, that added together give a palindrome (129921).

The spelling of 2129919 in words is "two million, one hundred twenty-nine thousand, nine hundred nineteen".